[RE-wrenches] Efficiency Curves of Fronius Inverters?

[Jeff Clearwater, Village Power Design]

Thanks Mark!

Nice source I wasn't aware of!

jc


>Jeff,
>
>Here is what they submitted to the California Energy Commision:
>
><http://www.gosolarcalifornia.ca.gov/equipment/inverter_tests/summaries/Fronius%20IG%204000.pdf>http://www.gosolarcalifornia.ca.gov/equipment/inverter_tests/summaries/Fronius%20IG%204000.pdf
>
>
>Mark Frye
>Berkeley Solar Electric Systems
>303 Redbud Way
>Nevada City,  CA 95959
>(530) 401-8024
><http://www.berkeleysolar.com/>www.berkeleysolar.com 
>
>
>
>From: re-wrenches-bounces at lists.re-wrenches.org 
>[mailto:re-wrenches-bounces at lists.re-wrenches.org] On Behalf Of Jeff 
>Clearwater, Village Power Design
>Sent: Wednesday, July 08, 2009 3:35 PM
>To: RE-wrenches
>Subject: [RE-wrenches] Efficiency Curves of Fronius Inverters?
>
>Hey Folks,
>
>Anyone have or know where I can get my hands on the efficiency vs. 
>wattage curve for the Fronius IG series (the old series - not the 
>Plus).
>
>I have a 4000 in stock and wondering if I can apply it to a friend's 
>2660 watt system without losing much to efficiency at low power 
>levels.
>
>Best,
>
>Jeff
>
>
>
>>There are numerous options here:  most ground mount manu's offer 
>>ballasted systems, I would look to them 1st. Other systems I've 
>>seen or used - 1) Pour a continuous surface "footer" that is large 
>>enough in size to provide the proper ballast for the uplift in your 
>>area, pour one along the S. edge/legs and another along the 
>>back/north legs. 2) Tie all legs together via a horiz. rail at 
>>least 6' wide and embed this in a rock filled gabion, again of the 
>>required weight. 3) Limestone is easy to drill, useing a hammer 
>>drill and extension bit drill 11/16" - 3/4" holes at least 18" into 
>>the stone at an angle, vary all angles as viewed in plan as they 
>>relate to the N/S line of the array (not as they relate to level), 
>>to mitgate pull-out from them all being in a line. i.e. - 1st leg 
>>hole is 90 degrees to the N/S line, 2nd leg is 180 from this, 3rd 
>>is 45 and so on, in other words if looking in plan and you could 
>>see all holes they would radiate around the "face of a clock" with 
>>each leg hole on a different "hour". Finally, epoxy in 5/8" all 
>>thread, you can pre-bend the end to come out of the hole verticle 
>>or use a swivel connector from Uni-strut, B-line or equal.
>>
>>All of these suggestions should be run by a Structural Engineer 
>>before embarking, thus the 1st choice of working with a manu.
>>
>>
>>
>>
>>Good luck!
>>
>>-jeff o
>>
>>>From the Solar, Wind and Hydro powered office of Jeff 
>>>Oldham/Regenerative SOLutions
>>
>>
>>
>>____________________________________________________________
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>>your home before it is too late. Click here for homeowner insurance 
>>information.
>>
>>
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>
>
>--
>~~~~~~~~~~~~~
>Jeff Clearwater
>Senior Design Engineer
>NABCEP (tm) Certified Solar PV Installer
>http://www.nabcep.org/
>Village Power Design/NorthEast Solar Design
>Turnkey Solar Design & Installation for the Commercial Sector
>http://www.villagepower.com
>gosolar at villagepower.com
>
>Voice: 413-259-3776
>Fax: 413-825-0703
>65 Schoolhouse Rd
>Amherst, MA 01002
>~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
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-- 
~~~~~~~~~~~~~
Jeff Clearwater
Senior Design Engineer
NABCEP (tm) Certified Solar PV Installer
http://www.nabcep.org/
Village Power Design/NorthEast Solar Design
Turnkey Solar Design & Installation for the Commercial Sector
http://www.villagepower.com
gosolar at villagepower.com

Voice: 413-259-3776
Fax: 413-825-0703
65 Schoolhouse Rd
Amherst, MA 01002
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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